How to wear a suit when the weather is very hot?

For business negotiations, in fact, many places are air-conditioned, so it should be no problem to wear shirts.

If it's indoors, it's a long-sleeved shirt and trousers. If necessary, bring a suit jacket. Wear it on this occasion.

If you are outdoors, you can consider knitting short-sleeved POLO shirts and Korean ice silk POLO shirts. I'm not sure if it's called Korean ice silk, but I know it's a unique fabric in Korea. It's quite high-end It feels cold and breathable. My father had someone buy it from abroad before, so I know. ) with a slightly slim suit or simple business casual pants.